Fig. 4

Unrooted phylogenetic tree, gene structures and conserved motifs of the ZmWRKY family in maize. The evolutionary tree from the ZmWRKY protein sequences was constructed using the MEGA 7.0 program with the Neighbor-joining method. Different colors represented various groups. The conserved motifs of ZmWRKY proteins were analyzed using MEME. Boxes with different colors denote different motifs and their position in each ZmWRKY protein. All 125 genes’ structures were obtained using GSDS 2.0. CDS, intron and 5′/3′ UTR are denoted by orange rectangles, single lines and green rectangles, respectively. (Color figure online)